Silver Spurflower Plectranthus argentatus
ABOUT
Plectranthus argentatus, commonly known as the Silver Spurflower, is an attractive plant known for its foliage rather than its flowers. The most striking feature of the Silver Spurflower is its silver or grey-green leaves. These leaves are ovate to broadly ovate, and they possess a soft, velvety texture, often with a fine layer of short hairs that give the foliage a shimmering, silvery appearance when it catches the light. The leaf edges are slightly scalloped, and the tips can be either blunt or gently pointed. Beneath the leaves, the underside may be a lighter gray, adding to the contrasting visual appeal when leaves are stirred by a breeze. The stems of the Silver Spurflower are often four-sided and can take on a hue similar to the leaves but may appear more purplish in some light conditions. Although the focus is usually on the leaves, this plant does produce flowers. The flowers are slightly inconspicuous when compared to the showy leaves, but they are still charming in their own right. Arranged in spikes that extend above the foliage, the flower clusters are composed of small blooms that tend to be a pale lavender or violet-blue color. The effect of these delicate flowers against the backdrop of silvery foliage can be stunning in various settings. The overall appearance of Silver Spurflower makes it a favored ornamental plant in gardens and as part of indoor collections. Its ability to provide a soft, muted tone through its unique foliage coloration, along with its low maintenance needs, makes it a popular choice for those seeking to add subtle elegance to their planting designs.
About this plant
NamesSynonyms
Silver Spurflower, Silver Plectranthus, Swedish Ivy
Common names
Coleus argentatus, Plectranthus parviflorus, Plectranthus parvifolius, Solenostemon parviflorus.
ToxicityTo humans
Plectranthus argentatus, commonly known as the silver spurflower, is generally not known to be toxic to humans. There are no significant reports of poisoning or adverse reactions from ingesting this plant. As with any plant, individual sensitivities can vary, and it is always advisable to avoid consuming parts of ornamental plants due to the potential for unknown reactions or the presence of pesticides.
To pets
Plectranthus argentatus, commonly known as the silver spurflower, is not typically listed as a toxic plant to pets. There is little to no information suggesting that this plant poses a significant risk of toxicity to cats, dogs, or other domestic animals. However, ingestion of non-food items by pets can result in gastrointestinal upset, so it is generally not encouraged for pets to eat ornamental plants. If a pet does consume silver spurflower and shows signs of distress, it is recommended to consult a veterinarian.
CharacteristicsLife cycle
Perennials
Foliage type
Evergreen
Color of leaves
Silvery
Flower color
Blue
Height
2-3 feet (60-90 cm)
Spread
2-3 feet (60-90 cm)
Plant type
Shrub
Hardiness zones
10
Native area
Australia
Benefits
General Benefits- Ornamental Appeal: Silver spurflower features attractive silvery-grey foliage that adds visual interest to garden spaces.
- Drought Tolerance: Once established, the silver spurflower is drought-resistant, making it a low-maintenance option for dry climates.
- Pest Resistance: This plant is generally resistant to pests, reducing the need for chemical treatments.
- Easy Propagation: The silver spurflower can be easily propagated from cuttings, allowing gardeners to expand their gardens affordably.
- Soil Adaptability: It is able to grow in a variety of soil types, although it prefers well-drained conditions.
- Shade Tolerance: The plant can tolerate partial shade, providing flexibility in garden design and placement.
- Seasonal Interest: The plant produces small, lavender to white flowers, typically in spring or summer, adding seasonal charm to the garden.
- Container Gardening: Silver spurflower is suitable for containers, which is ideal for balconies, patios, or where ground planting isn't possible.
- Habitat Support: The flowers can attract bees and other pollinators, supporting local ecosystems.
- Fast Growth: With fast growth rate, the silver spurflower can quickly fill in garden beds or pots, providing a lush look in a short time span.
Medical PropertiesThis plant is not used for medical purposes.
Air-purifying QualitiesThis plant is not specifically known for air purifying qualities.
Other Uses- As a natural insect repellent, the Silver Spurflower's strong scent is believed to deter insects from the garden, which can be beneficial for protecting other plants.
- Used in potpourri, the leaves of the Silver Spurflower can be dried and added to potpourri mixtures for their aromatic properties.
- In crafting, the Silver Spurflower can be used for its attractive foliage in floral arrangements, wreaths, and other decorative items.
- As a companion plant in vegetable gardens, Silver Spurflower may help in repelling certain pests that are attracted to vegetables.
- Garden beautification, Silver Spurflower with its silver foliage and blue-violet flowers adds unique color contrast in ornamental beds and borders.
- Used as a ground cover, Silver Spurflower can provide a silvery carpet that suppresses weeds and retains soil moisture.
- For erosion control, the Silver Spurflower’s spreading habit can help stabilize soil on slopes and prevent erosion.
- As part of a sensory garden, the textured leaves and aromatic scent of Silver Spurflower engage the senses of touch and smell.
- In educational gardens, the Silver Spurflower can be used to teach about plant habits, drought resistance, and the importance of pollinators through its attractiveness to bees and butterflies.
- Taxidermy, where the aromatic quality of the Silver Spurflower might be used in preserving specimens by deterring pests.
Interesting Facts
Feng ShuiThe Silver Spurflower is not used in Feng Shui practice.
Zodiac Sign CompitabilityThe Silver Spurflower is not used in astrology practice.
Plant Symbolism- Silver Foliage: Plectranthus argentatus, commonly known as Silver Spurflower, has striking silver-colored leaves, which often symbolize grace and elegance. The shimmering foliage can also represent a sense of sophistication and distinction in the garden.
- Adaptability: The Silver Spurflower is known for its adaptability to various growing conditions, which can symbolize versatility and resilience. It reflects the ability to thrive in changing environments.
- Ornamental Beauty: As an ornamental plant, the Silver Spurflower's beauty is appreciated in many gardens, symbolizing aesthetic appreciation and the joy of visual pleasure.
- Comforting Presence: The soft texture and pleasant appearance of the Silver Spurflower can symbolize comfort and a soothing presence, bringing a sense of peace and tranquility to its surroundings.
WaterThe Silver Spurflower (Plectranthus argentatus) prefers consistent moisture, and it should be watered thoroughly when the top inch of soil feels dry to the touch. Typically, this means watering every week, but the exact frequency depends on the environmental conditions such as temperature and humidity. When watering, provide enough water so that it runs through the drainage holes—at least 16 onzes but not more than 32 onzes for smaller pots. During winter or in cooler temperatures, reduce watering to every other week, ensuring the soil does not become waterlogged. Adjust the amount of water and frequency as needed based on the plant's response and the season.
LightThe Silver Spurflower thrives in bright, indirect light but can also tolerate partial shade. It's optimal to place the plant in a location where it receives filtered sunlight, such as near a south-facing window with sheer curtains or an east-facing window that gets gentle morning sun. Direct afternoon sunlight should be avoided as it can be too intense and may lead to leaf scorch.
TemperatureFor the Silver Spurflower, the ideal temperature range is between 60°F and 75°F. It can survive temperatures as low as 50°F, but growth may slow down considerably. Ensure protection from temperatures below 40°F, as they can be harmful to the plant. Avoid placing your Silver Spurflower near drafts or heating and cooling vents to maintain stable temperature conditions.
PruningPruning the Silver Spurflower maintains its shape and encourages bushier growth. It should be pruned in early spring, before the onset of new growth. Cut back leggy stems and remove any dead or yellowing leaves to promote a healthier and more aesthetically pleasing plant. Pruning can be done every few months or as needed when the plant starts to look unkempt.
CleaningAs needed
SoilSilver spurflower thrives in well-draining, fertile soil with a pH range of 6.0 to 7.5. A mix of peat, perlite, and compost is ideal for promoting robust growth and drainage.
RepottingSilver spurflower should be repotted every 1 to 2 years, best done in the spring, to refresh the soil and accommodate root growth.
Humidity & MistingSilver spurflower prefers moderate humidity levels, ideally between 40% to 60%, for optimal growth.
Suitable locationsIndoor
Place in bright, indirect light with ample airflow for a happy silver spurflower.
Outdoor
Plant in partial shade with well-draining soil for best silver spurflower growth.
Hardiness zone
9-11 USDA
Life cyclePlectranthus argentatus, commonly known as Silver Spurflower, begins its life as a seed that germinates in warm, moist soil, typically in spring or early summer. The seedling emerges and develops into a vegetative stage, forming a bushy plant with square stems and soft, hairy, silvery leaves. As it matures, Silver Spurflower begins the flowering stage, producing spikes of pale blue to mauve flowers, often in late summer to fall. The flowers are followed by the production of small, dry fruits containing seeds, which disseminate for propagation. After flowering, the plant may die back, particularly if exposed to frost, but can also survive as a perennial in milder climates, regrowing from the base. To maintain vigor and shape, it may be pruned after flowering, encouraging a new flush of silvery foliage.
PropogationPropogation time
Spring-Early Summer
Propogation: Plectranthus argentatus, commonly known as the Silver Spurflower, is often propagated through stem cuttings. This method can be most effectively carried out in late spring to early summer when the plant's growth is vigorous. To propagate, a healthy stem cutting about 4 to 6 inches (approximately 10 to 15 centimeters) long is taken from the parent plant. It is important to select a stem that has no flowers or flower buds. The lower leaves are removed, and the cut end is dipped in rooting hormone powder to encourage root growth. The cutting is then planted in a well-draining soil mix and kept moist but not waterlogged. In a warm and humid environment, roots will typically develop within a few weeks, after which the new Silver Spurflower plants can be transplanted to their final location.
